Norse Mythology: God of weather and fertility. He ruled over the land of the light elves, Alfheim. He was the son of Njord and Njord's sister (mayhaps Ingun), and the brother of Freya. His step-mother was Skadi. To make peace, the Aesir and Vanir exchanged hostages. He, along with Njord and Freya, were sent by the Vanir to dwell with the Aesir. He owned the ship Skidbladnir which was made for him by dwarves. It could sail on the land, sea, or through the air. It was large enough to hold all the gods, yet could be folded up and fit into a pocket. He also owned a chariot drawn by two boars, Gullinbursti and Slidrugtanni. He could ride Gullinbursti [golden-bristled] through the sky. It was made by dwarfs for Loki to give to Frey. His name means "Lord" and it is thought that he was at one time the consort of his sister Freya [Lady]. His wife was Gerd, a beautiful giantess who he fell in love with when he espied her from Odin's throne. He sent his servant, Skirnir, to win her for him. For thistask, Frey lent Skirnir his sword which "swings itself if wise he who wields it" and his horse. After Skirnir's threatening of her, Gerd agreed to give herself to Frey in nine nights at the forest Barri. At the Ragnarok, Frey will be killed by the fire giant Surt.
Also known as Yng, Frey is named as the progenitor of the swedish royal family. There was a statue of Frey in the temple at Uppsala in Sweden, the center of his cult.
(Nicole Cherry, A list of Norse Beings, http://www.ugcs.caltech.edu/~cherryne)